<template>
	<div>
		<el-upload
			v-if="type === 'url'"
			ref="uploadRef"
			:action="upload.url"
			:before-upload="handleBeforeUpload"
			:headers="upload.headers"
			:on-error="handleUploadError"
			:on-success="handleUploadSuccess"
			:show-file-list="false"
			class="editor-img-uploader"
			name="file"
		>
		</el-upload>
		<div class="editor">
			<quill-editor
				ref="quillEditorRef"
				v-model:content="content"
				:options="options"
				:style="styles"
				contentType="html"
				@textChange="(e: any) => $emit('update:modelValue', content)"
			/>
		</div>
	</div>
</template>

<script lang="ts" setup>
import { QuillEditor, Quill } from "@vueup/vue-quill";
import "@vueup/vue-quill/dist/vue-quill.snow.css";
import { propTypes } from "@/utils/propTypes";
import { globalHeaders } from "@/utils/request";

const props = defineProps({
	/* 编辑器的内容 */
	modelValue: propTypes.string,
	/* 高度 */
	height: propTypes.number.def(400),
	/* 最小高度 */
	minHeight: propTypes.number.def(400),
	/* 只读 */
	readOnly: propTypes.bool.def(false),
	/* 上传文件大小限制(MB) */
	fileSize: propTypes.number.def(5),
	/* 类型（base64格式、url格式） */
	type: propTypes.string.def("url"),
});

const { proxy } = getCurrentInstance() as ComponentInternalInstance;

const upload = reactive<UploadOption>({
	headers: globalHeaders(),
	url: import.meta.env.VITE_APP_BASE_API + "/common/upload",
});
const quillEditorRef = ref();

const options = ref({
	theme: "snow",
	bounds: document.body,
	debug: "warn",
	modules: {
		// 工具栏配置
		toolbar: {
			container: [
				["bold", "italic", "underline", "strike"],       // 加粗 斜体 下划线 删除线
				["blockquote", "code-block"],                    // 引用  代码块
				[{ list: "ordered" }, { list: "bullet" }],       // 有序、无序列表
				[{ indent: "-1" }, { indent: "+1" }],            // 缩进
				[{ size: ["small", false, "large", "huge"] }],   // 字体大小
				[{ header: [1, 2, 3, 4, 5, 6, false] }],         // 标题
				[{ color: [] }, { background: [] }],             // 字体颜色、字体背景颜色
				[{ align: [] }],                                 // 对齐方式
				["clean"],                                       // 清除文本格式
				["link", "image", "video"],                       // 链接、图片、视频
			],
			handlers: {
				image: function(value: any) {
					if (value) {
						// 调用element图片上传
						(document.querySelector(".editor-img-uploader>.el-upload") as HTMLDivElement)?.click();
					} else {
						Quill.format("image", true);
					}
				},
			},
		},
	},
	placeholder: "请输入内容",
	readOnly: props.readOnly,
});

const styles = computed(() => {
	let style: any = {};
	if (props.minHeight) {
		style.minHeight = `${props.minHeight}px`;
	}
	if (props.height) {
		style.height = `${props.height}px`;
	}
	return style;
});

const content = ref("");
watch(() => props.modelValue, (v) => {
	if (v !== content.value) {
		content.value = v === undefined ? "<p></p>" : v;
	}
}, { immediate: true });

// 图片上传成功返回图片地址
const handleUploadSuccess = (res: any) => {
	// 如果上传成功
	if (res.code === 200) {
		// 获取富文本实例
		let quill = toRaw(quillEditorRef.value).getQuill();
		// 获取光标位置
		let length = quill.selection.savedRange.index;
		// 插入图片，res为服务器返回的图片链接地址
		quill.insertEmbed(length, "image", import.meta.env.VITE_APP_BASE_API + res.data.url);
		// 调整光标到最后
		quill.setSelection(length + 1);
		proxy?.$modal.closeLoading();
	} else {
		proxy?.$modal.loading(res.msg);
		proxy?.$modal.closeLoading();
	}
};

// 图片上传前拦截
const handleBeforeUpload = (file: any) => {
	const type = ["image/jpeg", "image/jpg", "image/png", "image/svg"];
	const isJPG = type.includes(file.type);
	//检验文件格式
	if (!isJPG) {
		proxy?.$modal.msgError(`图片格式错误!`);
		return false;
	}
	// 校检文件大小
	if (props.fileSize) {
		const isLt = file.size / 1024 / 1024 < props.fileSize;
		if (!isLt) {
			proxy?.$modal.msgError(`上传文件大小不能超过 ${props.fileSize} MB!`);
			return false;
		}
	}
	proxy?.$modal.loading("正在上传文件，请稍候...");
	return true;
};

// 图片失败拦截
const handleUploadError = (err: any) => {
	console.error(err);
	proxy?.$modal.msgError("上传文件失败");
};
</script>

<style>
.editor-img-uploader {
	display: none;
}

.editor,
.ql-toolbar {
	white-space: pre-wrap !important;
	line-height: normal !important;
}

.quill-img {
	display: none;
}

.ql-snow .ql-tooltip[data-mode="link"]::before {
	content: "请输入链接地址:";
}

.ql-snow .ql-tooltip.ql-editing a.ql-action::after {
	border-right: 0;
	content: "保存";
	padding-right: 0;
}

.ql-snow .ql-tooltip[data-mode="video"]::before {
	content: "请输入视频地址:";
}

.ql-snow .ql-picker.ql-size .ql-picker-label::before,
.ql-snow .ql-picker.ql-size .ql-picker-item::before {
	content: "14px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="small"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="small"]::before {
	content: "10px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="large"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="large"]::before {
	content: "18px";
}

.ql-snow .ql-picker.ql-size .ql-picker-label[data-value="huge"]::before,
.ql-snow .ql-picker.ql-size .ql-picker-item[data-value="huge"]::before {
	content: "32px";
}

.ql-snow .ql-picker.ql-header .ql-picker-label::before,
.ql-snow .ql-picker.ql-header .ql-picker-item::before {
	content: "文本";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="1"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="1"]::before {
	content: "标题1";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="2"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="2"]::before {
	content: "标题2";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="3"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="3"]::before {
	content: "标题3";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="4"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="4"]::before {
	content: "标题4";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="5"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="5"]::before {
	content: "标题5";
}

.ql-snow .ql-picker.ql-header .ql-picker-label[data-value="6"]::before,
.ql-snow .ql-picker.ql-header .ql-picker-item[data-value="6"]::before {
	content: "标题6";
}

.ql-snow .ql-picker.ql-font .ql-picker-label::before,
.ql-snow .ql-picker.ql-font .ql-picker-item::before {
	content: "标准字体";
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="serif"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="serif"]::before {
	content: "衬线字体";
}

.ql-snow .ql-picker.ql-font .ql-picker-label[data-value="monospace"]::before,
.ql-snow .ql-picker.ql-font .ql-picker-item[data-value="monospace"]::before {
	content: "等宽字体";
}
</style>
